/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 26727
 * Date: 2024-06-03
 * Time: 12:05
 */
 public class TreeNode {
    int val;
    TreeNode left;
    TreeNode right;
    TreeNode() {}
    TreeNode(int val) { this.val = val; }
    TreeNode(int val, TreeNode left, TreeNode right) {
         this.val = val;
         this.left = left;
         this.right = right;
    }
 }
